Driver protection circuit

Details Driver protection circuit Driver protection circuit

1988-05-09

1989-06-13

Pellinen, A. D.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific quantity comparison means

361 56, 361 86, 361 92, 361111, 307127, 307130, 307246, 307355, H02H 312, H02H 318, H02H 324

Patent

active

048397695

ABSTRACT:
A reverse battery and loss of positive supply voltage detector circuit includes a power field effect transistor for switching a stored inductive energy to the ground supply voltage terminal if there is a disruption in the power supply. A detector circuit senses a reversal of the supply voltage connections as would happen if the battery were connected backwards and enables the power field effect transistor for discharging a negative voltage that may have developed across an inductive load. The detector circuit further senses a loss of the positive supply voltage and enables the power field effect transistor for discharging a negative voltage that may have developed across an inductive load due to the disruption of applied power.

REFERENCES:
patent: 4020395 (1977-04-01), Erickson et al.
patent: 4644255 (1987-02-01), Freymuth
patent: 4665459 (1987-05-01), Bynum et al.
patent: 4679112 (1987-07-01), Craig
patent: 4705322 (1987-11-01), Yiannoulos
Ralston, Anthony, ed. Encyclopedia of Computer Science and Engineering, 1983, pp. 774-775.

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